﻿<p>The element type <em>IfcFlowTreatmentDeviceType</em> defines a list of commonly shared property set definitions of a flow treatment device and an optional set of product representations. It is used to define a flow treatment device specification (the specific product information that is common to all occurrences of that product type).</p> 
	     
<p>A flow treatment device is a device used to change the physical properties of the medium, such as an air, oil or water filter (used to remove particulates from the fluid), or a duct silencer (used to attenuate noise).  Flow treatment types (or the instantiable subtypes) may be exchanged without being already assigned to occurrences.</p> 
	
<p>The occurrences of the <em>IfcFlowTreatmentDeviceType</em> are represented by instances of <em>IfcFlowTreatmentDevice</em> or its subtypes.</p> 
    
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HISTORY&nbsp; New entity in IFC2x2.
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